Professional-grade 9 x 11.5" kraft self-seal mailers built from .028 chipboard for maximum puncture resistance and document protection. Peel-and-seal closure with easy-tear pull tab requires no additional stiffeners, reducing shipping weight and costs. Case of 100 mailers ideal for e-commerce brands shipping photos, documents, and flat merchandise.
In Stock SKU: RM2K

9 x 11.5" Kraft Self-Seal Stayflats Plus® Mailers - 100ct Case

9 x 11.5" kraft self-seal mailers built from.028 chipboard for maximum puncture resistance and document protection. Peel-and-seal closure with easy-tear pull tab requires no additional stiffeners, reducing shipping weight and costs. Case of 100 mailers ideal for e-commerce brands shipping photos, documents, and flat merchandise.

$46.69 / CASE (100 PER CASE)
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Confirm this specSKU RM2K
Size
9 x 11 1/2 in
Material
.028 Chipboard
Color
Kraft
Sold as
CASE (100 PER CASE)
Freight class
60
Material
.028 Kraft Chipboard
Dimensions
9 x 11 1/2 inches
Closure Type
Peel-and-Seal with Pull-Tab Tear Strip
Good fit for

E-commerce brands shipping photos, documents, and flat items need reliable protection without bulk. The 9 x 11 1/2" Kraft Self-Seal Stayflats Plus® mailers deliver professional presentation with.028 chipboard construction that prevents bending and punctures while keeping postage costs down.

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Best For

E-commerce brands shipping photos, documents, and flat items need reliable protection without bulk. The 9 x 11 1/2" Kraft Self-Seal Stayflats Plus® mailers deliver professional presentation with.028 chipboard construction that prevents bending and punctures while keeping postage costs down.

How to Choose the Right Packaging

These mailers combine rigid.028 kraft chipboard with a peel-and-seal closure and pull-tab tear strip for effortless opening, no additional stiffeners required. The lightweight design reduces per-unit shipping costs while the self-adhesive seal ensures consistent, tamper-evident closures that reinforce brand professionalism.

Specs at a Glance

Material.028 Kraft Chipboard
Dimensions9 x 11 1/2 inches
Closure TypePeel-and-Seal with Pull-Tab Tear Strip
Case Quantity100 Mailers Per Case
RecyclableYes
Common Use Cases
  • Photo and print shipments from photography and print-on-demand businesses Document mailing for legal, financial, and professional services Flat item packaging for apparel, samples, and catalogs E-commerce brand packaging for photo books, prints, and certificates B2B direct mail and promotional material distribution
What You'll Receive
  • 100 kraft self-seal stayflat mailers (9 x 11 1/2 inches) Pre-applied peel-and-seal adhesive strips on all mailers
Shipping & Packaging

Mailers ship flat in cases of 100, maximizing storage efficiency. Bulk packaging reduces dimensional weight charges during your outbound shipping.

Frequently Bought Together

Related supplies

Frequently Asked Questions

Yes. The.028 chipboard construction is rigid enough to keep flat contents protected without additional stiffeners. The stay-flat design resists warping and bending throughout the shipping process.

The self-adhesive seal is engineered for reliability and consistency across high-volume packing. The pull-tab tear strip enables customers to open mailers cleanly without damaging contents, enhancing unboxing experience.

Absolutely. The lightweight.028 kraft chipboard keeps per-unit weight low, reducing dimensional and actual postage rates compared to heavier alternatives while maintaining full puncture and bend protection.

Yes. The kraft material provides a professional, sustainable appearance that aligns with brand identity. The self-seal closure and tear strip deliver a polished unboxing experience that encourages repeat purchases and positive reviews.

Technical Specifications

Closure TypePeel-and-Seal with Pull-Tab Tear Strip
Case Quantity100 Mailers Per Case
RecyclableYes
Color Kraft
Strength / Material .028 Chipboard
Dimensions (Internal) 9"" × 11 1/2"" (L × W × H)

Product Downloads

Shipping Information

Outer Carton Dimensions

14.5" × 9.75" × 9.5" (L × W × D)

Unit of Measure

CASE

Qty Per Shipping Unit

100 PER CASE

LTL Freight Class

Class 60

Delivery Method

Shown at checkout

ORDER SUPPORT

Product Support

We aim to show product specs, case quantities, and availability clearly. Contact support if an item does not match the listed product details.

Secure checkout LTL freight available on case/skid orders

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